3 Tyrants Killed (lifetime)

Kill an enemy with each weapon type including special weapons.

31 Parasites killed (lifetime)

Complete Nothing is as it Seems

Purchase 5 weapons.

Beat an Echo Six Expansion Pack mission with the 3 female characters in your party.

Attempt "The Rescue" and survive.

Follow orders and defeat all liabilities.

Complete the fifth mission of the U.S.S. campaign.

Kill 13 zombie dogs (lifetime)

Heal with 101 Green Herbs (lifetime)

Complete the fourth mission of the U.S.S. campaign.

Kill 5 enemies while using a zombie as a shield.